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Finding the Fourth Proportional to 671.13, 925.83 and 408.69

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Solution

The fourth proportional to 671.13, 925.83 and 408.69 is: 563.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.13 : 925.83 = 408.69 : x
  2. Step 2: Convert to fraction form
    671.13/925.83 = 408.69/x
  3. Step 3: Cross multiply
    671.13x = 925.83 × 408.69
  4. Step 4: Simplify right side
    671.13x = 378,377.46
  5. Step 5: Solve for x
    x = 378,377.46/671.13
  6. Step 6: Final answer
    x = 563.79

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